Didnt Bioware say somewhere that if you "Disassemble" any campaign gear you would automatically learn the schematic.
So as long as everyone is trusted..... DONT use Masterloot if you plan on learning schematics.
Obviously you probably wouldnt do this on modded items. But wrists/belts be a good idea.
But if the gear isnt of much use to you AND you want to learn the schematics.. this is the best option.
Except Campaign drops are tokens not gear.